| abstract |
A photocatalyst article containing an oxide semiconductor which contains a compound of at least one element selected from the group consisting of Mg, Sc, V, Cr, Mn, Y, Nb, Mo, Ru, W, and Re in such an amount that the ratio of (A) the number of atoms of the metallic element to (B) that of atoms of the metal(s) as a component of the semiconductor, (A/B), is from 0.20 to 2. The article has high photocatalytic activity even when irradiated with slight ultraviolet or visible light, is highly prevented from fogging and fouling, and satisfactorily retains this property over long. It is valuable as an article prevented from fogging and fouling. |